Improper Input Validation Affecting php-dompdf package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.45% (37th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PHPDOMPDF-18391859
  • published29 Jul 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

NewCVE-2026-56722  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable php-dompdf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-dompdf package and not the php-dompdf package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, aAn attacker who controls the HTML input can bypass this restriction by embedding a target file path inside an SVG image delivered through a  data:  URI, because dompdf processes the SVG twice and the second pass does not enforce the same protections as the first. When rendering, dompdf hands the SVG to the separate  php-svg-lib  library with external references forced on, and that library has no knowledge of the chroot directory, blocks only the  phar://  scheme, and ultimately reads the referenced file with no path or protocol validation. This lets an external, unauthenticated attacker read arbitrary image files from the server's file system in the default configuration. This issue has been fixed in version 3.16.

CVSS Base Scores

version 3.1